diff --git a/src/Common/UiElement.php b/src/Common/UiElement.php
index 8e5e55d..838a25c 100644
--- a/src/Common/UiElement.php
+++ b/src/Common/UiElement.php
@@ -39,10 +39,14 @@ class UiElement implements \ArrayAccess, \Iterator, \JsonSerializable {
 
     protected ?UiQuery $kwery = null;
 
-    public function __construct() {
+    public function __construct(? string $tag = null) {
         if ( ! static::$config ) {
             static::pushConfigArray( include(dirname(__FILE__) . "/taglist.php") );
         }
+        
+        if ($tag !== null) {
+            $this->tag = $tag;
+        }
     }
 
     public static function pushConfigArray(array $array) : void
@@ -237,54 +241,35 @@ class UiElement implements \ArrayAccess, \Iterator, \JsonSerializable {
         return $this->content;
     }
 
-    public function append( ...$arguments ) {
-        return $this->insert( self::INSERT_MODE_APPEND, ...$arguments);
+    public function append( ...$arguments ) : self 
+    {
+        return $this->insert( static::INSERT_MODE_APPEND, ...$arguments);
     }
 
-    public function prepend( ...$arguments ) {
-        return $this->insert( self::INSERT_MODE_PREPEND, ...(is_array($arguments) ? array_reverse($arguments) : $arguments));
+    public function prepend( ...$arguments ) : self 
+    {
+        return $this->insert( static::INSERT_MODE_PREPEND, ...( is_array($arguments) ? array_reverse($arguments) : $arguments) );
     }
 
-    public function insert($insert_mode = self::INSERT_MODE_APPEND, ...$arguments) {
-        if ( ! $arguments || !( $count = count($arguments) ) ) {
-            return $this;
-        }
-
-        $insert = function($content) use ( $insert_mode ) {
-            if ( self::is_node($content) ) {
-                if ($insert_mode === self::INSERT_MODE_APPEND ) {
-                    $this->childs[] = $content;
-                }
-                elseif ($insert_mode === self::INSERT_MODE_PREPEND ) {
-                    array_unshift($this->childs, $content);
-                }
-            }
-        };
-
-        if ( $count == 1 && !is_array($arguments) ) {
-            // Single node to add
-            $insert($arguments);
-        }
-        else {
-            // multiple node to add
-            foreach ( $arguments as $item ) {
-                if ( is_array($item) ) {
-                    foreach ( $item as $key => $value ) {
-                        if ( !is_numeric($key) ) {
-                            $value->name = $key;
-                        }
-
-                        $this->insert($insert_mode, $value);
-                    }
-                }
-                else {
-                    $insert($item);
-                }
+    
+    protected function insert(int $mode, ...$elements) : self
+    {
+        foreach($elements as $item) {
+            switch($mode) {
+                case static::INSERT_MODE_APPEND:
+                    array_push($this->childs, $item);
+                break;
+            
+                case static::INSERT_MODE_PREPEND:
+                    array_unshift($this->childs, $item);
+                break;
+            
             }
         }
-
+    
         return $this;
     }
+    
 
     public function attributes(array $attributes) : self
     {
@@ -416,7 +401,7 @@ class UiElement implements \ArrayAccess, \Iterator, \JsonSerializable {
 
     public static function is_node($obj) : bool
     {
-        return is_object($obj) && get_class($obj) === static::class;
+        return $obj instanceof UiElement;
     }
 
     public function __toString() : string
diff --git a/src/Form/UiForm.php b/src/Form/UiForm.php
index afaf2a9..9e2b8e7 100644
--- a/src/Form/UiForm.php
+++ b/src/Form/UiForm.php
@@ -55,7 +55,7 @@ class UiForm extends UiElement implements Extension {
     {
         $this->option('tag-type', 'single');
         $this->attributes([ 'method' => $method, 'action' => $action ] + $attributes);
-
+        
         return $this->render() . PHP_EOL;
     }
 }
\ No newline at end of file
diff --git a/src/Form/UiSelect.php b/src/Form/UiSelect.php
index 0fb92b5..e5e5663 100644
--- a/src/Form/UiSelect.php
+++ b/src/Form/UiSelect.php
@@ -40,6 +40,7 @@ class UiSelect extends UiElement implements Extension {
         foreach($list as $key => $item) {
             if ($item instanceof UiElement) {
                 $this->append($item);
+                
                 continue;
             }
             elseif ( is_array($item) ) {
@@ -53,7 +54,7 @@ class UiSelect extends UiElement implements Extension {
             else {
                 $obj = $this->createOption($item, $key, $strict ? $key === $selected : $key == $selected);
             }
-
+            
             $this->append($obj);
         }
     }
@@ -64,6 +65,10 @@ class UiSelect extends UiElement implements Extension {
         $option->text($name);
         $option->attributes($attributes + [ 'value' => $value ]);
 
+        if ($selected) {
+            $option->attributes(['selected' => 'selected']);
+        }
+        
         return $option;
     }
 }